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8 bestAc Leak Stoppersof September 2025

112M consumers helped this year.

56% off

1

FrostyCool R134a and R12 Replacement A/C Refrigerant Deluxe Recharge Mobile Sealer and Stop Leak Kit
FrostyCool R134a and R12 Replacement A/C Refrigerant Deluxe Recharge Mobile Sealer and Stop Leak Kit

FrostyCool

9.8

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2

LEAK SAVER Direct Inject Refrigerant Leak Sealer – Small System AC Refrigerant Leak Sealant for Most HVAC Systems - Automotive Leak Sealer – Up to 1 Tons (Small)
LEAK SAVER Direct Inject Refrigerant Leak Sealer – Small System AC Refrigerant Leak Sealant for Most HVAC Systems - Automotive Leak Sealer – Up to 1 Tons (Small)

Leak Saver

9.6

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20% off

3

emzone Multi 12A A/C Stop Leak (45856)
emzone Multi 12A A/C Stop Leak (45856)

Emzone

9.3

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4

LEAK SAVER Direct Inject UV Refrigerant Leak Sealer – AC Refrigerant Leak Sealant for Most HVAC Systems - Automotive Leak Sealer – Up to 5 Tons – Added UV Dye for Leak Detection
LEAK SAVER Direct Inject UV Refrigerant Leak Sealer – AC Refrigerant Leak Sealant for Most HVAC Systems - Automotive Leak Sealer – Up to 5 Tons – Added UV Dye for Leak Detection

Leak Saver

9.1

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5

Ultra Cool 1234yf Refrigerant kit w/Stop Leak
Ultra Cool 1234yf Refrigerant kit w/Stop Leak

Ultra Cool

8.8

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6

Red Angel A/C Stop Leak - 2 Ounce (49496)
Red Angel A/C Stop Leak - 2 Ounce (49496)

BlueDevil Products

8.5

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7

DiversiTech 985 Super Seal Flex Inject Ac Leak Stop DIY System
DiversiTech 985 Super Seal Flex Inject Ac Leak Stop DIY System

Diversitech

8.2

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6% off

8

Interdynamics (RLS-3) R-134a Refrigerant with Leak Sealer and UV Dye - 10.25 oz.
Interdynamics (RLS-3) R-134a Refrigerant with Leak Sealer and UV Dye - 10.25 oz.

InterDynamics

7.9

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